Memory card casing having longitudinally formed ridges and radially formed ribs for support of contacts of a PCB

Abstract

A memory card casing is composed of a top cover having multiple through holes defined in a peripheral edge of the top cover, and a bottom cover, wherein the bottom cover has multiple longitudinal ridges formed on a peripheral edge of the bottom cover, a first rib formed on the bottom cover to connect to one end of each of the longitudinal ridges and a second rib formed on the bottom cover to connect to the other end of each of the longitudinal ridges so that after a printed circuit board is inserted into a receiving space between the bottom cover and the top cover, contacts on the printed circuit board are exposed via the through holes of the top cover and fully supported by the longitudinal ridges.

1. A memory card casing comprising a top cover having multiple through holes defined in a peripheral edge of the top cover, and a bottom cover, wherein the bottom cover has multiple longitudinal ridges formed on a peripheral edge of the bottom cover, a first rib raised above a bottom surface of the bottom cover to connect to one end of each of the longitudinal ridges and a second rib raised above the bottom surface of the bottom cover to connect to another end of each of the longitudinal ridges, the longitudinal ridges being flush with the first and second ribs so that after a printed circuit board is inserted into a receiving space between the bottom cover and the top cover, and contacts on the printed circuit board are exposed via the through holes of the top cover and fully supported by the longitudinal ridges. 
   
   
     2. The memory card casing as claimed in  claim 1 , wherein each ridge is composed of multiple raised portions and a quantity of the raised portions is no greater than three.